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My service light is on, back of circuit board shows fault d20. What does that mean?

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I believe that is a sensor fault. check the pressure switch

Posted on Jan 12, 2016

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Posted on Jan 02, 2017

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My hitachi Tv model: LD39HK08A having problem, it shows image for a second and screen become blank, front blue LED only visible. this tv don't have separate back light inveter board. which board i have...


Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

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Samsung vp d20 camcorder


MiniDV cameras have two video heads on the rotating drum, which read and write the picture in broad horizontal bands. When one head is not working, normally because it is clogged by dust/dirt/tape residue, you see broad bands of noise across the image occupying exactly half the total image area.......

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TV have picture for a while and then the screen goes black. when disassembled, all backlight was on about 20 seconds and then gone. When I power on again it flashed once then stayed off. advice pls


Fault at its main digital board. Back-light control voltage fault. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

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I have a Samsung rf268ABBP that has a steady red light on the inverter board on the back. What does this red light mean?


Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

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My spider III has a broken resistor on the pcb board, number D20. I need to know the resistence numbers so I can replace it.


If the damaged component is designated D20 then it is a diode. If it was a resistor it would be marked as R20.There is a copy of the circuit available here http://music-electronics-forum.com/t3077...

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1 Answer

My service enginee light came on this a.m. what does this mean I just had an oil change 2 weeks ago on my 2002 chevy trailblazer.


the service engine light is part of the on-board computer system, the reason the computer turned on the light is because it saw a fault in on of its control circuits or it saw a fault in one of its sensors, it could be as simple as the gas cap is not on tight enouf but you need to have the codes pulled from the on-board computer system you can have this done for free a auto-zone.

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1 Answer

Will not heat


Common faults -
1 The heating elements can fail (meaning open circuit)
2 There are cut-outs (T.O.C's) that might need resetting
3 The thermostats (stats) can trip out or burn out (meaning open circuit)
4 Modern tumble dryers also have sensors and pcb's (Printed circuit boards) these have programs that can fail and circuitry although most should produce an error code showing you were the fault is.
5 Faulty connections and burned wires may also be the fault.




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Everytime you turn it on a red light comes on and stating service


That means that the machine is in fault mode because an internal error had been detected.
Unplug the machine or trip the circuit breaker to reset control board.
Before reconnecting power check drain hose, check if there is a blockage in drain pump hose, check if there is water from hose at the back.
If the machine is still in fault mode after re-connecting, then call the service number listed at the end of the owners manual. The technical support will guide through the diagnostic procedure, and this will tell you more about the fault.

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Flashing red light . i have unplugged and plugged back in green light comes on then goes away and red light returns and flashes. i have had the tv 2 yrs to the day almost. what do i do


When the led flashes a certain number of times it tells the technician what circuit is at fault causing a problem resulting in total shutdown. There are no secret codes or methods to get your tv back up and running without having it repaired "SORRY". On Philips models a 7 flash window indicates an under voltage within your power supply circuit. This means there's a Op-Amplifier, high wattage resister, Power-IC, Diode, or NPN-PNP transistor that has developed an internal defect and needs to be replaced. Keep in mind that these TV's produce alot of heat and so the components on the circuit board are prone to thermal breakdown over time. I can show how to fix this problem if your willing to cooperate with me and follow some steps.

Your tv will not work again unless its opened and serviced! Period.

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1 Answer

1997 Saturn SL1 need to know what these codes mean?


P1640 islow coolant / hot / ATF temperature lamp circuit fault
P1641 is cruise clutch circuit fault low fuel circuit fault ( 1997 - 1999 )
hope that this is what you are looking for and if so I hope that you take the time to rate this response.

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